reetings'm new to this forum, and I hope your help, my problem is I have a 2003 Murano, the rear Bosina the driver is not heard. change the eBay buy another radio. I am thinking it was the right channel not served him radius amount I buy and still the same problem that the channel behind the driver is not heard. remove the horn and tried it out and listen well. it will not be if the amplifier, but thought change the radius goes costly to change the face of controls over the new radio. There is someone to help me thanks for your help.